Patent GB-190925939-A (GB)
Title: Improvements in or relating to Stop-motions for Machinery for Winding Yarns or Threads.
Inventor: KERSHAW GRINDROD
IPC: B65H63/02
Filed: 1909-11-10
Granted: 1910-11-10
Abstract: 25,939. Kershaw, G. Nov. 10. Stop-motions; driving-arrangements; stop apparatus, non-automatic.-Relates to winding- machines in which the thread-guide is traversed in a rocking cradle h and is pressed towards the bobbin being wound by a weighted lever &c., and in which the stoppage of the machine is effected by the rocking of a spring or weight actuated shaft w. The driving-shaft l is driven through friction gearing from a shaft arranged at right-angles to it, and drives the drum carrying the slide for the traversing threadguide and also the spindle, the first through spur change-gearing, and the second through a strap which may be adjusted on cone drums. The spring-actuated rocking shaft w carries three arms, one for disengaging the friction driving-mechanism against the action of a spring, one for engaging with the spindle driving-drum on the shaft l and so acting as a brake on stopping, and the third, 1, for engaging in a notch 5 in the catch-lever 4 when the parts are in the required position for winding. Both the lever 4 and shaft w are provided with actuating-handles 6, z, respectively. When a thread breaks, the needle box 26 is tilted in the usual way and an arm 24 thereon engages with an arm 23 of the lever 4, thereby disengaging the arm 1 and allowing the spring x of the shaft w to rotate the shaft and stop the machine. The use of the arms 23, 24 allow the brackets 34 carrying the needle box 26 to be adjusted along the rod 35. The needle box may be fitted with one or more needles, and when fitted with more than one needle, one or more of these may be held in their raised position out of action, if desired, by means of spring pins 77, Fig. 5, mounted in keyhole-shaped openings in the needle box. The Figure shows the pin in its withdrawn position, with its flattened end 81 clear of the needle 27. When it is desired to place the needle out of action, it is raised until a bend therein is level with the pin 77, and the latter is turned until a pin 84 thereon is in its lowest position, when the pin is forced forward by its spring 80 until its end engages with the bend in the needle. To stop the machine when the winding is completed, the cradle h carries an adjustable bracket 18 carrying a guide surface 19 against which rests the hooked end 17 of a spring catch-lever 11, which is connected with the lever 4 by a slotted link 13. As the winding proceeds, the cradle h turns until the end of the lever 11 springs over the edge of the surface 19 and simultaneously operates the lever 4 and disengages the arm 1, when the machine is stopped as before, the hook 17 preventing the approach of the cradle h towards the spindle until the bobbin has been removed and the winding is to be re-started. The cradle h is forced towards the spindle by a weighted band 46, Fig. 8, which passes over a cam-surface 43 by which its effect is modified as the winding proceeds, a disk 40 adjustably connected to the cam being connected by a second strap 37 with a bracket 39 on the cradle. To prevent the cradle from rebounding towards the spindle during the winding operation, the cradle carries a roller 54, Fig. 3, which engages with a camsurface 50 on a weighted lever 49, the other arm 52 of the lever carrying a projection 53, which, when the lever 49 is operated for restarting the machine, engages with a camsurface 12 on the lever 11 and disengages the hooked catch 17 from the bracket 18.